Description
The HI839800 COD Test Tube Heater is engineered to deliver stable, accurate, and repeatable digestion results for COD testing. Users can instantly select between two preset temperature profiles — 150°C and 105°C — with a single button press, ensuring standardized operation. The integrated adjustable countdown timer (up to 180 minutes) allows precise control over digestion time, and the heating cycle begins only after the temperature stabilizes for maximum consistency. Throughout both Idle Mode and Heating Mode, the LCD continuously displays current temperature, target temperature, reaction time, and operational status, giving users complete visibility.
Safety is a core feature of the HI839800. The system includes three high-visibility LED indicators — green for power, yellow for active heating, and red for hot surface warning above 50°C. A built-in thermal fuse automatically shuts down the heater in case of overheating, instantly turning off all LEDs to protect users and equipment. The heater also includes a 25-vial aluminum heating block with a dedicated reference temperature well, allowing users to verify block accuracy using an external probe. Clear on-screen error messages notify users of extreme temperature conditions or heating system faults, ensuring confident and secure laboratory operation.
